Home / 21,067.74-31,589.38-9,974.33

Finding the Fourth Proportional to 21,067.74, 31,589.38 and 9,974.33

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Solution

The fourth proportional to 21,067.74, 31,589.38 and 9,974.33 is: 14,955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.74 : 31,589.38 = 9,974.33 : x
  2. Step 2: Convert to fraction form
    21,067.74/31,589.38 = 9,974.33/x
  3. Step 3: Cross multiply
    21,067.74x = 31,589.38 × 9,974.33
  4. Step 4: Simplify right side
    21,067.74x = 315,083,079.34
  5. Step 5: Solve for x
    x = 315,083,079.34/21,067.74
  6. Step 6: Final answer
    x = 14,955.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.